Alaska earthquakes

M2.9 earthquake 40 km ESE of Atka, Alaska

A magnitude 2.9 earthquake struck 40 km ESE of Atka, Alaska on Tue, Jul 27, 2021, 11:26 AM HADT (20:26 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M3.1 10 km NW of Atka, Alaska. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude: 2.9 (ml), micro
Local time: Tue, Jul 27, 2021, 11:26 AM HADT
UTC: 2021-07-27 20:26:49 UTC
Depth: 5.0 km (3.1 mi), shallow
Epicenter: 52.044° N, 173.662° W
Region: Alaska
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 3.3 km horizontally, 2.0 km in depth
Magnitude uncertainty: ±0.15
Depth from: Operator assigned
Station coverage gap: 304°, poorly surrounded by stations
Stations used: 29

Nearby

Within 100 km, magnitude 1.5 and up: 96 in the 60 days after this one and 61 in the 30 days before it.

After

The first 60 of 96.

Before

Earthquakes today Alaska earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000f7n0 (also filed as ak0219kbujdj). Read Thu, Sep 24, 2026, 9:41 AM UTC.